Update bandwidth optimisation - percentage meaning

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  1. Posts : 98
    Windows 10 Pro
       #1

    Update bandwidth optimisation - percentage meaning


    Hi everybody

    The new Fall Creator update brings the much awaited update bandwidth management but I have a question and I could not find an answer online.
    The control panel allows you to set a percentage of the bandwidth - percentage of what? How does Windows know my internet speed? I am concerned it just uses the network card speed instead.

    Update bandwidth optimisation - percentage meaning-bandwidth-custom-.png

    However in the activity monitor section it also shows an "average download speed (user initiated)" which suggests two things
    1. Windows actually knows the speed of the internet - which creates an interesting scenario: say my broadband is 50Mbit, Windows knows that and it is also told to use 50% of that. That night that my internet slows down to 20Mbit, will Windows try to use 25Mbit of it??

    2. When updates are initiated by the user, they are not throttled down.

    Update bandwidth optimisation - percentage meaning-bandwidth-2-custom-.png

    Thanks for your help.
    Tony
      My Computer


  2. Posts : 2,078
    Windows 10 Pro
       #2

    That's a new one on me.....where is this setting?
      My Computer


  3. Posts : 98
    Windows 10 Pro
    Thread Starter
       #3

    Hi, it's on the latest version of Windows Fall creator update - 1709. A much awaited feature - at least for me.

    Limit Bandwidth of Windows Update and Store App Updates in Windows 10
      My Computer


  4. Posts : 2,078
    Windows 10 Pro
       #4

    Thanks.....from what I gather it's to help users that are on metered connections or if your are worried about data usage from downloads from other PC's. If I understand it correctly....I just had a quick glance at the info.

    That said, I have that option turned off so it doesn't apply to me.
      My Computer


  5. Posts : 98
    Windows 10 Pro
    Thread Starter
       #5

    Windows update takes 100% of my bandwidth - 55Mbit download. I cannot do ANYTHING ELSE when the PC is updating. I had to set a manual update option via the group policies. This new feature is welcome but it is not clear how those percentages work.

    I understand there are clearer options on the group policies (actual KBs) but was just wondering what those percentages are.
      My Computer


  6. Posts : 5,478
    2004
       #6

    tony359 said:
    The control panel allows you to set a percentage of the bandwidth - percentage of what?
    I suppose it is QoS

    Unless of course MS have used the word "bandwidth" incorrectly and "I'll use 50% of your bandwidth" means "I'll upload 50% of what I download" like a torrent client.

    Windows cannot possibly tell (without repeatedly polling connection speed) that I've moved from sitting on my router to sitting on my balcony and my bandwidth (via WiFi) has therefore dropped by 90%.

    I don't know the answer but it is a very interesting question. Hopefully someone more technical than me will explain.
      My Computer


  7. Posts : 13,683
    Windows10
       #7

    Given it is rather unclear what the percentages mean, I guess you could just use trial and error e.g. set the percentage to a low figure eg 10% and if that goes to much one way or the other, adjust up or down accordingly.

    In most cases, I guess people want to minimise impact of downloads on performance so setting it low initially would be the logical thing to do, pragmatically accepting updates will download more slowly.
      My Computer


  8. Posts : 5,478
    2004
       #8

    The question is what does 100% of bandwidth mean? 56k? 100Mbps? Who knows.

    This is from 2003 QoS Tools and Settings: Quality of Service (QoS)

    Specifies the maximum, total percentage of link bandwidth that all QoS-aware applications on this computer can reserve.
    <snip> bla bla bla </snip>
    For example, the default value of the registry entry reserves 80 percent of the bandwidth for QoS-aware applications, but this does not prevent other applications from using more than the remaining 20 percent of the bandwidth.
    It seems nowhere is it defined (or at least I can't find it) how 100% of bandwidth is calculated.

    That makes it an interesting question.
      My Computer


  9. Posts : 2,078
    Windows 10 Pro
       #9

    tony359 said:
    Hi everybody

    The new Fall Creator update brings the much awaited update bandwidth management but I have a question and I could not find an answer online.
    The control panel allows you to set a percentage of the bandwidth - percentage of what? How does Windows know my internet speed? I am concerned it just uses the network card speed instead.

    Update bandwidth optimisation - percentage meaning-bandwidth-custom-.png

    However in the activity monitor section it also shows an "average download speed (user initiated)" which suggests two things
    1. Windows actually knows the speed of the internet - which creates an interesting scenario: say my broadband is 50Mbit, Windows knows that and it is also told to use 50% of that. That night that my internet slows down to 20Mbit, will Windows try to use 25Mbit of it??

    2. When updates are initiated by the user, they are not throttled down.

    Update bandwidth optimisation - percentage meaning-bandwidth-2-custom-.png

    Thanks for your help.
    Tony
    Uncheck that box for limiting your bandwidth, then turn off "Allow downloads from other PC's" and check to see how your bandwidth works/reacts.
      My Computer


  10. Posts : 5,478
    2004
       #10

    Plankton said:
    Uncheck that box for limiting your bandwidth, then turn off "Allow downloads from other PC's" and check to see how your bandwidth works/reacts.
    Did you read the question?
      My Computer


 

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